package org.ehl.filer;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 字符集过滤器,默认UTF-8"
 * @author LIAIJUN
 *
 */
public class CharacterEncodingFiler implements Filter {
	String characterEncoding="UTF-8";

	@Override
	public void destroy() {
		// TODO Auto-generated method stub

	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse res = (HttpServletResponse) response;
		req.setCharacterEncoding(characterEncoding);
		res.setCharacterEncoding(characterEncoding);
		chain.doFilter(request, response);

	}

	@Override
	public void init(FilterConfig config) throws ServletException {
		characterEncoding = config.getInitParameter("encoding");

	}

}
